Facebook has blocked blogspot.ca. This means anyone with a blog on Blogger in Canada can't post their links to Facebook. I've written them about it this morning. Hopefully they will unblock it soon.
Here is the message that comes up if you try to post a blogspot.ca link:
Sorry, this post contains a blocked URL
For more information, visit the Help Center. If you think you're seeing this by mistake, please let us know.
As of June 1, 2012, it seems that Facebook is no longer blocking the core blogspot.ca site. Thank you to all those who wrote to Facebook about this.